SOLUTION:
How much of a 75% copper alloy should be melted into 62 kg of a 35% copper alloy to produce an alloy which is 50% copper?
Algebra.Com
Question 723962:
How much of a 75% copper alloy should be melted into 62 kg of a 35% copper alloy to produce an alloy which is 50% copper?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
.75x+.35*62=.50(62+x)
.75x+21.70=31+.50x
.75x-50x=31-21.70
.25x=9.30
x=9.30/.25
x=37.2 kg of the 75% alloy is needed.
Proof:
.75*37.2+.35*62=.50(62+37.2)
27.9+21.70=.50*99.2
49.60=49.60
RELATED QUESTIONS
how much of 75% copper alloy should be melted into 62 kg of a 35% copper alloy to produce (answered by mananth)
How much 35% copper alloy should be melted with 37 kg of 75% copper alloy to produce an... (answered by checkley77)
How many Kg of a 35% copper alloy must be added to 62 Kg of a 75% copper alloy to give... (answered by Fombitz)
A copper alloy that is 35% copper is to be combined with an ally that is 75% copper. The (answered by josgarithmetic,ikleyn)
a certain alloy contails 75% copper and a second alloy 35% copper. how many kilograms of... (answered by Fombitz)
How many kg of a 45% copper alloy must be added to 62kg of a 60% copper alloy to form an... (answered by stanbon)
A metal alloy is 35% copper. Another metal alloy is 50% copper. How much of each alloy... (answered by jorel1380,ankor@dixie-net.com,ikleyn)
I am truly stumped with this one.
An alloy weighing 20 kg is 30% copper. How many kg... (answered by Earlsdon)
A metalworker has a metal alloy that is 25% copper and another alloy that is... (answered by josgarithmetic)